The program was relaunched in 1992 under the code name Project 921.
The program was relaunched in 1992 under the code name Project 921.
这个计划于1992年以921工程的代号重新启动。
The program was relaunched in 1992 under the code name Project 921.
这个计划于1992年以921工程的代号重新启动。